Document Detail

Impact of laryngeal mask airway cuff pressures on the incidence of sore throat in children.
MedLine Citation:
PMID:  19281479     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Hyperinflation of laryngeal mask airway cuffs can cause harm to the upper airway mainly by exerting high pressures on pharyngeal and laryngeal structures thus impairing mucosal perfusion. Although cuff manometers can be used to guide the monitoring of cuff pressures, their use is not routine in many institutions. In a prospective audit, we assessed the incidence of sore throat following day-case-surgery in relation to the intracuff pressure within the laryngeal mask airway. METHODS: Four hundred children (3-21 years) were consecutively included in this study. The laryngeal mask airway was inflated as deemed necessary by the attending anesthetist. Cuff pressures were measured using a calibrated cuff manometer (Portex Limited, Hythe, Kent, UK, 0-120 cm H2O, pressures exceeding the measurement range were set at 140 cm H2O for statistical purposes) at induction of anesthesia. RESULTS: Forty-five children (11.25%) developed sore throat, 32 (8%) sore neck and 17 (4.25%) sore jaw. Of those that developed sore throat, 56.5% had cuff pressures exceeding >100 cm H2O. In contrast, when cuff pressures were <40 cm H2O, there were no episodes of sore throat, whilst there was only a 4.6% occurrence of sore throat if cuff pressures were between 40-60 cm H2O. CONCLUSION: We have demonstrated that intra cuff pressure in laryngeal mask airways is closely related to the development of sore throat with higher pressures increasing its likelihood. Hence, cuff pressures should be measured routinely using a manometer to minimize the incidence of sore throat.
Justin Gin Leong Wong; Mairead Heaney; Neil A Chambers; Thomas O Erb; Britta S von Ungern-Sternberg
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-03-05
Journal Detail:
Title:  Paediatric anaesthesia     Volume:  19     ISSN:  1460-9592     ISO Abbreviation:  Paediatr Anaesth     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-05-20     Completed Date:  2009-07-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9206575     Medline TA:  Paediatr Anaesth     Country:  France    
Other Details:
Languages:  eng     Pagination:  464-9     Citation Subset:  IM    
Department of Anaesthesia, Princess Margaret Hospital for Children, Subiaco, WA 6008, Australia.
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MeSH Terms
Australia / epidemiology
Child, Preschool
Laryngeal Masks / adverse effects,  utilization*
Pharyngitis / epidemiology*,  etiology
Postoperative Complications / epidemiology*,  etiology
Prospective Studies
Quality of Health Care / statistics & numerical data
Risk Factors
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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